Home / 20,110.16-27,749.22-13,400.12

Finding the Fourth Proportional to 20,110.16, 27,749.22 and 13,400.12

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Solution

The fourth proportional to 20,110.16, 27,749.22 and 13,400.12 is: 18,490.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,110.16 : 27,749.22 = 13,400.12 : x
  2. Step 2: Convert to fraction form
    20,110.16/27,749.22 = 13,400.12/x
  3. Step 3: Cross multiply
    20,110.16x = 27,749.22 × 13,400.12
  4. Step 4: Simplify right side
    20,110.16x = 371,842,739.16
  5. Step 5: Solve for x
    x = 371,842,739.16/20,110.16
  6. Step 6: Final answer
    x = 18,490.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.